Torque Ripple Optimization of Arc Linear Permanent Magnet Synchronous Motor with Subdomain Model

This paper designs an outer rotor direct-driving arc linear permanent magnet synchronous motor (ALPMSM) for direct-drive rotation scenarios within a certain angle range. Combined with an exact sub-domain model, a multi-objective optimization method is proposed to improve the torque performance of the ALPMSM based on parameter sensitivity analysis. The electromagnetic performances of the optimized motor are compared through finite element analysis, and the results verified the improvement in motor performance.